Of course guerilla warfare would be useful, and in addition to that, there may need to be a unique fighting style. What combination of fighting styles would you and your comrades use? For example BJJ and Boxing or Karate and Muay Thai, or maybe ten of the styles combined! :D Feel free to use your imagination! Please explain your options and how each style could be used. Thank you :))
The easiest thing to do would be to use free publically available military manuals, combined with specific expertise of whoever you have. Take the US marine hand to hand combat manual (you can find free pdfs online) and combine with expertise of fellow revolutionaries who happen to have some kind of martial arts experience and you’ll have something perfectly adequate.